/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.launcher3;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.ViewGroup;

/**
 * 完整 An icon that can appear on in the workspace representing an
 * {@link UserFolder}.
 */
public class FolderIcon extends BubbleTextView implements DropTarget {
	private Drawable mCloseIcon;
	private Drawable mOpenIcon;
	private Launcher mLauncher;
	private UserFolderInfo mInfo;

	/**
	 * 完整
	 * 
	 * @param context
	 * @param attrs
	 */
	public FolderIcon(final Context context, final AttributeSet attrs) {
		super(context, attrs);
	}

	/**
	 * 完整
	 * 
	 * @param context
	 */
	public FolderIcon(final Context context) {
		super(context);
	}

	/**
	 * 完整
	 */
	public boolean acceptDrop(final DragSource source, final int x,
			final int y, final int xOffset, final int yOffset,
			final Object dragInfo) {
		final ItemInfo item = (ItemInfo) dragInfo;
		final int itemType = item.itemType;

		return (itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT)
				&& item.container != mInfo.id;
	}

	/**
	 * 完整
	 */
	public Rect estimateDropLocation(final DragSource source, final int x,
			final int y, final int xOffset, final int yOffset,
			final Object dragInfo, final Rect recycle) {
		return null;
	}

	public void onDragEnter(final DragSource source, final int x, final int y,
			final int xOffset, final int yOffset, final Object dragInfo) {
		setCompoundDrawablesWithIntrinsicBounds(null, mOpenIcon, null, null);
	}

	public void onDragExit(final DragSource source, final int x, final int y,
			final int xOffset, final int yOffset, final Object dragInfo) {
		setCompoundDrawablesWithIntrinsicBounds(null, mCloseIcon, null, null);
	}

	public void onDragOver(final DragSource source, final int x, final int y,
			final int xOffset, final int yOffset, final Object dragInfo) {
	}

	/**
	 * 完整
	 */
	public void onDrop(final DragSource source, final int x, final int y,
			final int xOffset, final int yOffset, final Object dragInfo) {
		ItemInfo localItemInfo = (ItemInfo) dragInfo;
		ShortcutInfo localShortcutInfo;

		if ((localItemInfo instanceof ApplicationInfo)) {
			localShortcutInfo = ((ApplicationInfo) localItemInfo)
					.makeShortcut();
		} else {
			localShortcutInfo = (ShortcutInfo) dragInfo;
			this.mLauncher.removeShortcut(localShortcutInfo);
		}

		this.mInfo.add(localShortcutInfo);

		Launcher localLauncher = this.mLauncher;
		LauncherModel.addOrMoveItemInDatabase(localLauncher, localShortcutInfo,
				this.mInfo.id, 0, 0, 0);
	}

	/**
	 * 完整
	 */
	static FolderIcon fromXml(final int resId, final Launcher launcher,
			final ViewGroup group, final UserFolderInfo folderInfo) {
		FolderIcon icon = (FolderIcon) LayoutInflater.from(launcher).inflate(
				resId, group, false);

		final Resources resources = launcher.getResources();
		Drawable d = resources.getDrawable(R.drawable.ic_launcher_folder);
		d = Utilities.createIconThumbnail(d, launcher);
		icon.mCloseIcon = d;
		icon.mOpenIcon = Utilities.createIconThumbnail(
				resources.getDrawable(R.drawable.ic_launcher_folder_open),
				launcher);
		icon.setCompoundDrawablesWithIntrinsicBounds(null, d, null, null);
		icon.setText(folderInfo.title);
		icon.setTag(folderInfo);
		icon.setOnClickListener(launcher);
		icon.mInfo = folderInfo;
		icon.mLauncher = launcher;
		return icon;
	}
}
